I just got my Pld to 60 and after a horrible time in Castle Zvahl Baileys, I decided that I would try doing this part of the quest on my own. When I saw the info given on ZAM, I figured the fight would be a piece of cake. I unfortunately didn't check the date of the postings. The information is dated and pretty much entirely wrong. I'm putting this up in hopes that someone considering soloing this fight or the such has a better idea of what they're getting into.
Let's start with Basic Info:
This NM is a PLD, but has apprx. 11,500 HP. Once again this figure of 7,500 seems extremely skewed. Anyway...
Now the PLD was the 2nd of the two NMS I fought. I went in as level 85WAR/41SAM with a level 70 Soothing Healer NPC. I will have a post on the entire fight under the link for the PLD AF. When I started fighting One-Eyed Gwajboj, I had about half my hp left and my npc was just about out of mp, I had received the warning "Sorry, I'm all out of mp". Realizing this, I equipped my tactics pearl which had another charge ready to go. I battled OeG to about 75% when things were looking grim, with about 300 hp left I disengaged him and disbanded with my npc. I managed to respawn my npc with 120 hp left, I quickly threw up third-eye, and luckily bought myself enough time for a cure V. After this point it was a cospletely different fight. On his own OeG misses many more of his attacks, and third-eye was much more effective. My npc got me back up to full health and I stayed in the green for the remainder of the fight. I used a total of 7 weapon skills on this NM, one of which was nullified by Invincible, which OeG threw up around 40% remaining for me. In the end, was about 11,500 DMG that was needed, he starts to spam Cure IV at low HP.
Hope this helps